Preheat the oven to 350ºF. Spray the bottom of a round 8-inch baking pan with nonstick spray then place parchment paper on top, pressing to adhere to the nonstick spray. If you do not have a piece of round parchment paper, make your own. Take a sheet of parchment paper and fold it into a square by folding one corner to the opposite side, aligning the corner to the opposite edge so you have a big triangle. Cut the excess from the bottom and reserve for another use. Fold one corner of the triangle towards the opposite corner to make a smaller triangle. Repeat one more time so you have a smaller triangle. Take the point of the triangle where all the folds are and hold in the middle of the overturned round pan. While holding that in place with your finger, trim the bottom of the triangle following the edge of the pan, discarding the excess parchment paper. Unfold the triangle and place into the bottom of the sprayed pan. Set aside.
Place 1 heaping tablespoon lemon zest and sugar in a large bowl. Using your fingers, work the lemon zest into the sugar until sugar starts to clump and the mixture is very fragrant. This helps release the oils in the lemon to bring out more lemon flavor.
2 tablespoons lemon zest, 1 cup granulated sugar
To the bowl with the lemon sugar, add in the flour, baking powder, and salt. Whisk to combine and set aside.
2 teaspoons baking powder, 1 ½ cups all-purpose flour, 1 teaspoon salt
In a separate bowl, add the eggs, ricotta, lemon juice, remaining lemon zest and vanilla. Whisk until smooth.
2 tablespoons lemon zest, ¼ cup freshly squeezed lemon juice, 1 ½ cups whole milk ricotta cheese, 3 large eggs, 2 teaspoons vanilla extract
Add the wet ingredients into the dry ingredients and use a rubber spatula to fold them together, just until blended.
Add the melted butter and fold in just until combined.
½ cup unsalted butter
Add batter to the prepared pan.
Bake cake until golden brown and a tester inserted into the center comes out clean, 50–60 minutes.
Let cool at least 20 minutes before inverting to cool. To do so, place a serving platter or large plate over top of the cake. Flip the cake over onto the serving platter and lift off the pan. Peel off the parchment paper from the bottom of the cake. Place a wire cooling rack over the cake. Grip the rack and the serving platter at the same time and flip over so it is right side up. Allow the cake to cool slightly on the wire rack. Sprinkle with powdered sugar before serving.
powdered sugar